Combined thread cutter and clamp



Dec. 14 1926.

'B. F. M GUINESS COMBINED THREAD CUTTER AND CLAMP Filed August 1, 1924 v8 I I J W v 4, v 4 4 I l n if v 5 Patented Dec. 14, 1926. V

v outrun stares rarest BENJAMIN F. MGGUINESS, OF GRAFTON, MASSACHUSETTS.ASSIGNOR TO CROMP'ION 88 KNOWLES LOOM WORKS, OF WQRCESTER,MASSACHUSETTS, A CORPORATION OF MASSACHUSETTS.

COMBINED THREAD CUTTER AND CLAMP.

Application filed August 1, 1924-. Serial No. 729,633.

My invention relates to thread cutters and clamps for weft replenishinglooms and it is the general object of the invention to provide improvedmeans for holding an old end of filling to-prevent the same from beingdrawn into the cloth when the cutter and clamp are opened to receiveanew end.

In weft replenishing mechanisms of the multi-color type it notinfrequently happens that transfers will occur on successive detectingbeats of the lay, the first transfer being for one shuttle and the nexttransfer for a second shuttle. At the time of transfer it is desirableto cut the filling of the outgoing bobbin and clamp it so that it willnot be drawn into the shed when the shuttle is picked but it is furtherdesirable that the first end be held while the clamp is opening toreceive the second end.

With this general object and other objects in view which will appear asthe description proceeds, my invention resides 1n the combination andarrangement of parts hereinafter described and set forth in the claims.D i In the accompanying drawings, wherein I have shown one form of myinvention,

F 1 is a side elevation of a multi-color 'weft replenishing mechanismshown as viewed from the central portion of the loom and having myinvention applied thereto,

Fig. 2 is an enlarged section on line 22 of Fig. 1 showing the clamp inclosed posi' tion,

Fig. 3 is a view similar to Fig. 2 but showing the clamps separated,

Fig. l is an enlarged horizontal section on line 4l-4- of Fig. 1.

i Fig. 5 is an enlarged side elevation of the cutter and clamp, and

Fig. 6 is a top plan view of the two part clamping element forming partof my invention.

Referring more particularly to Fig. 1 it will be seen that I haveprovided a weft replenishing mechanism having a frame 10 provided with astud 11 on which is pivotally mounted transferrer arm 12. The up perportion of said arm 12 is provided with a roll 13 spaced from the armand guided in bearing 14 on the arm 12 while the lower part of the armis provided with a latch 15 which is lifted into operative position withrespect to the hunter on the lay (not shown) by connector 16, the upperend of which is operatively connected to lever 17. Lever 17 iscontrolled as to position by means of top shaft 13 and the latter isprovided with an arm 19 adjustably secured thereon and having pivotallyattached thereto connector 20 which is yieldably attached to link 21.Said link 21 is connected at its lower end as at 22 to lever 23 whichhas a downwardly extending arm 24: supporting frame 25 of the combinedcutter and clamp. Lever 23 is pivoted on stud 26 carried by yoke 27 thelatter being secured to stud 28 and positioned thereon by collar 29. Thestud 28 passes through a bearing 30 which is bolted to the frame 10, andyoke 27 has a forwardly extending arm 31 carrying pin 32 which passesthrough a collar 33 yieldingly mounted on rod 34:. The lower end of rod34: is pivotally connected as at 35 to the forward extension of thelower jaw 36 of a clamp pivotally mounted on stud 37 carried by frame25. Cutter blade 38 is fixed to the frame 25 and movable cutter 39 isconnected as by a pin 40 to the lower j aw of the clamp.

At the time of transfer the lever 19 is raised by the partial rotationof shaft 18 in the direction indicated by the arrow, the effect of whichis to move lever 23 on stud 26 and move frame 25 and the parts supportedthereby to the dotted line position shown in Fig. 1. Stud 32remainsstationary as frame 25 is moving rearwardly, the result of whichis to lower the clamp 36 through the action of rod 34 and thus open thejaw of the clamp and cutter. Roll 13 extends through a slot in dependingarm 24 and as the transferrer descends the frame 25 is moved longitudienally of the lay. The matter thus far described is of commonconstruction and for a further description reference may be had tomyvprior Patent No. 1,261,417.

y invention relates more particularly to the construction of the clampmembers as shown more specifically in Figs. 2, 3' and 6. The lowerelement 36 of the clamp is composed of two parts and 51 between which islocated the tongue 52, the said parts and tongue being held together byscrew 53. The upper clamping element is also formed of two parts but inthe latter instance the parts are held together yieldingly and provisionis nside for their separation by the tongue 52.

ill

Accordingly, I provide clamping sections 54 and 55,.respectively,grooved as at 06 to receive helical spr; 1g 57 which lies in the groove56 and normally holds the sec'ions 54 and together. The section isprovided with a lug 38 (see Fig. 6) and the section 55 is provided witha boss 59 having a spring pocket which is positioned to engage lug 8when the two parts are assembled. The pocket receives spring 60 thetension of which is adjusted by screw 61 threadet into the frame 25 andthe boss engages a web (32 formed on tle frame 25 to limit downwardmovement of the clamping sections and Normally the cutter and clamp areclosed as shown in full lines in Fig. l, but at the time of transfer thecutter will move to the dotted line position shown in Fig. 1 with theclamps in the position shown in Fig. 3 and the trailing end of the weftVJ will pass between the upper and lower clamping elements. As the laynears the front center frame 25 will be moved forwardly to raise thelower j aw, at which time the tongue 52 will pass between the sections54c and 55, forcing the weft letween said sections. The parts willremain closed until the next indication for transfer at which time thetongue will move from the position shown in Fig. 2 to that shown in Fig.3 and the opposed teeth 63 of the sections will enthe yarn to preventwithdrawal of the same by the tongue. The lower portions of the sections54 and are provided with teeth 64: and sections 50 and 51 are formedwith teeth 65.

From the foregoing it will be seen that I have provided a thread clamphaving two elements, one of which is composed of yieldable sectionswhich are separated to receive the filling by a tongue extending fromthe other element and that the yielding sections serve to clamp thefilling when the tongue is removed to prevent said filling from beingreleased on the next operation of the clamp. Also, it will be seen thatthe tongue causes a greater length of thread to be taken up by the clampsot-hat said thread is acted upon by a relatively longer surface than isthe case in my aforesaid patent.

Having thus described my invention it will be apparent that changes andmodification's may be made therein by those skilled in the art withoutdeparting from the spirit and scope of the invention and I do not wishto be limited to the details herein disclosed, but what I claim is:

1. In a combined thread cutter and clamp or looms, means to cut thefilling, a pair of lamoing elements, one of'said elements be ing formedof a plura'lity of yieldinglv separable sections, and a tongueassociated with the other clamping element to move the filling betweenthe separable sections.

2. In a combined thread cutter and clamp 3. in a combined thread cutterand clamp for looms. means to cut the fillin a carrier for said means, apair of clamping elements pivotally mounted with respect to saidcarrier, one of said elements being formed of a pair of sectionsyieldingly held together, and a'tongue projecting from the other elementto move a filling end between the sections to separate the latter fromeach other, said sections being movable toward each other to clamp thefilling when the tongue is withdrawn.

4. In a combined thread cutter and clamp for looms, means to out thefilling, a pair of clamping elements movable toward and from each other,one of said elements having a pair of sections, means to hold thesections together yieldingly, and a tongue movable with the otherelement and positioned to enter between and separate said sections tomove the filling end between said sections, said sections being movedtoward each other when the tongue is withdrawn to clamp the filling whenthe clamping elements are separated from each other.

5. In a combined thread cutter and clamp for looms, a pair of clampingelements, one of said elements being formed of a plurality of separablesections, means carried by the other element to separate the sectionsand move the filling therebetween, and means to cut the fillingsubsequent to the separation of the sections.

6. In a combined thread cutter and clamp for looms, means to cut thefilling, a pair of clamping elements, one of said elements being formedof sections yieldingly held to gether and capable of movement apart in adirection substantially the same as the direction in which the thread tobe cut extends, and a tongue carried by the other element to separatethe sections and move the filling end between said sections, saidsections being movable toward each other to clamp the filling when thetongue is withdrawn and said tongue being proportioned to separate thesections before the cutting means acts on the fillings.

7. In a combined thread cutter and clamp for looms, a carrier plate,cutting elements mounted on the carrier, astud extending from thecarrier, a pair of clamping elements pivotally mounted on the stud, saidelements movable toward and from each lit) other about the stud as apivot, one of said elements being formed of a plurality of separablesections capable of slight movement toward and from each other in adirection substantially parallel to the stud, and means associated withthe other element to engage the filling and cause the same to enterbetween the sections as the elements move toward each other.

8. In a combined thread cutter and clamp for looms, means to cut thefilling, a pair of pivotally mounted clamping elements each having agrooved face to cooperate with a grooved face on the other elements, oneof said elements being formed of a plurality of sections having adjacentsurfaces extending transversely of the grooved faces of the elemerits,means carried by the other elementto enter between and separate thesections, and resilient means to move the sections together as thetongue is withdrawn.

9. In a combined thread cutter and clamp for looms, means to cut thefilling, a pair-of clamping elements, one of said elements being formedof a plurality of yieldingly separable sections, yarn engaging teethformed on adjacent surfaces of said sections, and means associated withthe other clamping element to move the filling between the sections andinto contact with the toothed surfaces thereof.

In testimony whereof I have hereunto affixed my signature.

BENJAMIN F. MQGUINESS.

